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Adding an Alton Automatic Louver Opener will help regulate the airflow automatically when temperature changes
Product Weight (LB): 21
Extension kit available in 3 ft
This sturdy shed features heavy duty galvanized steel interior wall columns and beams which give strength against wind and snow
Panel Width: 2ft
Janssens | Automatic Opener for Louvered Window eos Adding an Alton Automatic LouverThe Janssens Automatic Opener for Louvered Window is an optional addition to your louvered window in your Janssens greenhouse. The black tube is filled with special paraffin oil which expands when the temperature reaches around 72 F and the piston will push the window open. When temperature falls, a heavy spring pulls the window closed. No electricity needed! WARRANTY 15 Year Limited Warranty
US$ 169.50
US$ 199.50
US$ 169.50
US$ 169.50
US$ 169.50
US$ 169.50
US$ 169.50